Thresholds
Psychology ⇒ Sensation and Perception
Thresholds starts at 10 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Thresholds.
How you perform is determined by your score and the time you take.
When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 10
A person can detect a 2% change in the weight of an object. If the object weighs 200g, what is the JND?
A person can detect a difference between 100g and 105g, but not between 100g and 104g. What is the JND for this person at 100g?
A person can just notice the difference between 50g and 52g. What is the Weber fraction for this person?
A researcher increases the volume of a tone until a participant reports hearing it. What threshold is being measured?
According to Weber's Law, if you can just notice the difference between 10g and 11g, what is the JND for a 100g weight?
Describe how background noise can affect a person's absolute threshold for hearing.
Describe how thresholds are measured in psychological experiments.
Describe one factor that can influence a person's absolute threshold.
Describe one real-life example of an absolute threshold in daily life.
Explain how Weber's Law can be used to predict the JND for different stimulus intensities.
Explain the concept of the 'just noticeable difference' (JND) in your own words.
Explain why the absolute threshold is usually defined as the intensity detected 50% of the time.
Explain why the difference threshold is sometimes called the 'just noticeable difference.'
If a person can detect a light at 10 units of intensity 50% of the time, what is their absolute threshold for that light?
If a person can detect a sound at 20 decibels but not at 19 decibels, what is their absolute threshold for that sound?
If a person can just detect a candle flame 30 miles away on a clear night, this is an example of which type of threshold?
What is the definition of an absolute threshold in sensation and perception?
What is the main difference between the absolute threshold and the difference threshold?
Which threshold would be tested by gradually increasing the brightness of a light until it is just visible?
